Table of Contents One-to-One Relationship One-to-Many Relationship Many-to-Many Relationship Importance of Relationships In relational databases, relationships are crucial for organizing and linking data across different tables. They define how records…
Table of Contents 1. Primary Key 2. Unique Key 3. Foreign Key 4. Composite Key 5. Candidate Key 6. Super Key 7. Alternate Key 8. Surrogate Key 9. Summary 1.…
Functions in databases allow you to encapsulate reusable logic, perform computations, and return results. This guide covers how to write functions in both SQL Server and PostgreSQL, including examples, advanced…
Table of Contents Introduction Step 1: Understanding the Problem Step 2: Setting Up the Tables Step 3: Using a Cursor to Loop Through Data Step 4: Explanation of the Code…
Table of Contents Introduction Why the Ordinal Enhancement Matters New Ordinal Enhancement in SQL Server 2022 Syntax of STRING_SPLIT() with Ordinal Example of STRING_SPLIT() with Ordinal Output Explanation Conclusion Introduction…
